Fixing a defective Chinese branded carbon fiber frame.
Robert Adair
January 06, 2026
I bought an absolute nightmare carbon frame. This is the Twitter V1. Everything they could have screwed up, they screwed up. Brand new, right out of the box, it's complete trash. But instead of throwing it away, I show you how to fix it. I repair damaged carbon headset bearing seats, I repair cracks around the bottom bracket shell, I make the fork steerer round and I repair a badly made seat tube. If you have a carbon frame that needs some repair, or if you simply wish to see how bad this Twitter V1 is, check it out.
If you want to download the STL files for the 3D printed tools used in the video, I've uploaded them to Thingiverse: https://www.thingiverse.com/thing:7263863
Parts Mentioned
TWITTER Gravel V1
Vacation Sale
FrameTWITTER Gravel V1
Created: July 18, 2026The reviewer discusses the Twitter V1 gravel bike frame, highlighting numerous quality control and finish issues. They detail problems such as ill-fitting headset bearings, an undersized and non-round bottom bracket shell, a thin seat tube prone to cracking, a non-round steerer tube, and plugged threaded holes. The reviewer performs various repairs including sanding, filling with epoxy, and converting the seat tube to a seat mast. Despite the issues, they decide to build the frame into a complete bike to test its durability.
AI-Summary
Cons
- Headset bearings do not fit; head tube is too small.
- Bearing seats are thin and fragile.
- Bottom bracket shell is egg-shaped and undersized.
- Crack at edge of bottom bracket shell.
- Seat tube wall is thin near seat clamp relief, likely to crack.
- Steerer tube is not round.
- Many threaded holes are plugged with filler, carbon, or epoxy.
- Internal inspection reveals leftover bag and excess epoxy.
MyBikeParts
TWITTER neuer Gravel V1 Carbonfaser-Fahrradrahmen 700X40C hydraulische Scheibenbremse Rennradrahmen neue Beschichtung